Briggs 18 Twin II Model 422707 Type 151201 Code 88102712 First off, does anyone know what max factory RPM is on this motor? Second This motor is purely a "fun" motor. I had an extra mower laying around with this motor and simply made it a speed machine. Several people have warned me about simply bypassing the governor and that I shouldn't do that for safety reasons. If I can't do that can I increase the max rpm beyone factory specs some without risking the motor breaking into pieces? If so what would be a safe rpm? This mower will not be mowing lawns, just a toy.